Optical coupler used in semiconductor laser arrangements comprises voltage source, first nano-tube having diameter which forms energy gaps for charge carrier in tube, and light receiving unit

摘要

An optical coupler comprises a voltage source; a first nano-tube (101) having a diameter which forms energy gaps for the charge carrier in the tube; and a light receiving unit (209) arranged relative to the first tube so that light emitted by the tube partially hits the light receiving unit. Preferred Features: The light receiving unit is a semiconductor photodiode and has a second nano-tube (203) arranged relative to the first tube so that light emitted by the tube partially hits the second tube. The light receiving unit further comprises a measuring unit (205) to acquire the electrical conductivity of the second tube. The nano-tubes are carbon nano-tubes.